Melissa Joan Hart sings a song on the "Sabrina the Teenage Witch" TV soundtrack album, if that counts.

From Wikipedia: "Archie Comics sued music duo The Veronicas for trademark infringement in 2005 over the band's name, which was taken from the comic book character. Archie Comics and Sire Records (The Veronicas' record company) finally resolved their problems through a co-promotion deal."